Ring shank



FIG. 1 is a perspective view of a ring shank showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a perspective view of an alternative embodiment of FIG. 1; and,

FIG. 4 is a side elevational view of FIG. 3.

The broken lines in FIGS. 1 through 4 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a ring shank, as shown and described. 